WowAce

Adds cooldown timers to your trinket procs

Displays an alert whenever you loot an item for the first time.

Adds notes to item tooltips

Warnings about tanking specific abilities

Provides the ability to suppress specific spellcasts like "Deaden" from your casting bars.

Provide plenty of links

Utilities for pixel perfection, decimal to hex, parsing item strings

A Data Broker display for combat statistics.

Adanced Achievement Tracker is a smal tool to track Achievements

Splut

FuBar_TransporterFu

A library to try to guess a level of a player.

IDCard

GUI Configuration Library

Artifact power bar support for oUF layouts

Inventory and bank organizer.

Adds Name and Buyout Price sort columns to the auction house.

Quest helping: fetching items to use, that sort of thing.

Auto sizes frame layout depending on group/raid size or predefined zone data

FuBar_MonkeyQuestFu